cgroup: remove stray references to css_id

Trivial: remove the few stray references to css_id, which itself
was removed in v3.13's 2ff2a7d03bbe "cgroup: kill css_id".

Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 0 insertions, 3 deletions

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index cfaf416492dd..5c097596104b 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -29,7 +29,6 @@ struct cgroupfs_root;
 struct cgroup_subsys;
 struct inode;
 struct cgroup;
-struct css_id;
 
 extern int cgroup_init_early(void);
 extern int cgroup_init(void);
@@ -79,8 +78,6 @@ struct cgroup_subsys_state {
         struct cgroup_subsys_state *parent;
 
         unsigned long flags;
-        /* ID for this css, if possible */
-        struct css_id __rcu *id;
 
         /* percpu_ref killing and RCU release */
         struct rcu_head rcu_head;